Engine and transmission unit.



0. M. FERGUSON. ENGINE AND TRANSMESSION UNIT.

APPLICATION FILED JULY 23. 1914.

Patented. Jan. 11, 1916.

2 SHEETS-SHEET I.

WITNESSES. f7; [AWL [V702 I ATTUHWEYIS D, M, FERGUSON.

ENGINE AND TRANSWSSlON UNIT.

APPLICATION F!LED JULY 23,1914- L1fi?fi@& I Patented Jan.1l,1916.

2 SHEETS-SHEET 2.

/70 o 0 a O WIT/ 588585 A TTOR/VEYS IDONALIJ M. FERGUSON, F DETROIT, EIICHIGAN, AS$IGNOR TO GENERAL MOTOR-S GOMEANX,""OF DETROIT, MICHIGAN, ACORPORATION OF NEW JERSEY.

ENGINE AND. TRANSMISSION UNIT.

Specification of Letters Patent.

Patented Jan. 111, 1916.

Application filed July 23, 1914. Serial No. 852,581.

To all whom 1' may concern Be it known that I, DONALD M. Fnaeoson, acitizen of the United States of America,

residing at Detroit, in the countyof Wayneand Stateof Michigan, haveinvented 'certain new and useful Impnovements in Engine and TransmissionUnits, oif-whieh the following is a specification, reference being hadtherein to the accompanying drawings. The invention relates to engineand trans mission units more particularly designed for,

.use in motor vehicles, and the invention.

comprises, first, the construction of 'a pressed sheet metal pan formingthe connection between the casings of the engine and trans- "missionmechanism, and further, in various features of COIlStI'llCtlOIl lShereinafter set forth. 1

In the drawings: Figure l is a side elevation of the'unit;.Fig. 2 is aplan view with the engine casing removed; and Fig. 3 is a,

cross section on line n w Fig. 1.

In the construction of engines for motor vehicles it is customary toprovlde a drip pan for the oil, which in certain construe tion is formedof sheet metal. It is also common to form the engine and variable speedtransmission as a unit having casings which are integral or rigidlyattached to w'each other, said casings being usually formed-of castmetal.

It is, the object of the present invention to form the cast metalcasings for the engine and-the transmission distinct and separate fromeach other, and then to unite these parts by a pressed sheet metalmember forming the oil pan and alsoa means for mounting upon the vehicleframe. One advantage of this construction is that the pressed pan beingformed by dies will be absolutely accurate, which facilitates the properalining of the engine and transmission mechanism.

i gearing which is preferably complete in 5 ":self.

Dis the pressed sheet metal pan which is fashloned toform acomplementary portion E of the engine crank case, a portion F. forembracing the transmission housing and an intermediateconnecting portionGr which also forms a partial housing for the .fly wheel H. To impartstrength and rigidity to the structure it is provided with laterally-.extending flanges I along the opposite sides of its upper edge, andthese flanges maybe increased in width at the point where the pan isnarrowed from the portion G to the portion F, so as to form gussets J.The portion B of the crank case may be bolted or otherwise secured tothe flanges I, and the housing C is also secured to these flanges,preferablyby lugs K projecting laterally therefrom and bolted to theflanges. L is the clutch operating rock-shaft which is mounted inbearings M also secured to the flanges I.

N is a head or partition for completing the crank case and which issecured to the end of the portion E, the latterhaving a vertical wall 0for connecting it to the expanded or enlarged portion G. i

The unit is mounted upon suitable cross members of the frame, such asthe channel bar I? passing beneath the forward.v end Q of the pan andthe cross member R, which has a lJ-sh'aped central portion It forembracing the portion F and laterally-extending portion R upon which thegusse'ts J rest.

"If desired, the bottom of the portion hi may be apertured and aremovable pan 5 secured thereto, as shown.

With the construction as described the engine and transmission mechanismmay be readily mounted upon the member D, with the fly-wheel I I locatedin the enlarged connecting portion Gr. Inasmuch as the pan is open atthe topthere is nothing to prevent lowering of the. assembled elementsof the engine and' transn'iission into proper position and thenattaching the same to the flanges I. Thus the work of assembling isfacilitated.

What I claim as my invention is:

1. In an engine transmission unit, the combination with the upperportion of the crank case housing, of a separate transmiss'ion gearinghousing, and a pressed sheet metal member having a portion forming the"complementary portion of the crank case, a

portion embracing and secured to the transmission casing and an enlargedintermediate portion for embracing the fly-wheel.

2. In an engine transmission unit, the combination of an engine casingincluding the upper portion of the crank case. a separate transmissiongearing housing, a pressed said engine and transmission casing, and a'supporting cross bar having a U-shaped portion for embracing said sheetmetal member and a bearing for supporting and connecting to saidlaterally extending flanges.

3. In I an engine transmission unit, the combination with separateengine and transmission casings or a pressed sheet metal member having aportion complementary to the engine casing, a portion embracing thetransmission casing, an intermediate portion expanded to receive thefly-vvheel and an intermediate head or partition for separating theengine portion from the fly-wheel portion.

4. In an engine transmission unit, the combination. with an enginecasing and a separate transmission casing, of a pressed sheet metalmember having a portion comlementary to the engine case, a portionemracing the transmission casing, an interme diate portion expanded toreceive the flywheel, and a detachable pan forming the bottom of theengine casing portion.

5. In an engine transmission unit, the combination with the upperportion of the crank case housing, of a pressed sheet metal memberformed with laterally projecting flanges at each side of its upper edge,and' having a portion forming the complementary portion of thecrank-case, an enlarged intermediate portion for embracing the flywheeland a portion to receive transmission mechanism, and a supportingcross-bar having a U-shaped portion embracing said sheet metal member.and forming bearings at each side of the U-shaped portion forrespectively supporting said flanges.

In testimony whereof I afiiX my signature in presence of two Witnesses.

DONALD M. FERGUSON. Witnesses:

FRANK H. FLEMING, Euonnn D. WILLIAMsON.

